Names | |
---|---|
IUPAC name
Mercury selenide
| |
Identifiers | |
3D model (
JSmol)
|
|
ECHA InfoCard | 100.039.903 |
EC Number |
|
PubChem
CID
|
|
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
HgSe | |
Molar mass | 279.55 g/mol |
Appearance | grey-black solid |
Odor | odorless |
Density | 8.266 g/cm3 |
Melting point | 1,000 °C; 1,830 °F; 1,270 K |
insoluble | |
Structure | |
sphalerite | |
Thermochemistry | |
Heat capacity (C)
|
178 J kg−1 K−1 |
Std enthalpy of
formation (ΔfH⦵298) |
247 kJ/mol |
Hazards | |
GHS labelling: | |
Danger | |
H300, H310, H330, H373, H410 | |
P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P302+P350, P304+P340, P310, P314, P320, P321, P322, P330, P361, P363, P391, P403+P233, P405, P501 | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Related compounds | |
Other
anions
|
Mercury oxide Mercury sulfide Mercury telluride |
Other
cations
|
Zinc selenide Cadmium selenide |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Mercury selenide (HgSe; sometimes mercury(II) selenide) is a chemical compound of mercury and selenium. It is a grey-black crystalline solid semi-metal with a sphalerite structure. The lattice constant is 0.608 nm.
HgSe occurs naturally as the mineral Tiemannite, and is a component of the "intimate mixture" of HgSe and Se known as HgSe2. [1]
Along with other II-VI compounds, colloidal nanocrystals of HgSe can be formed.
HgSe is non-toxic as long as it is not ingested due to its insolubility. Toxic hydrogen selenide fumes can be evolved on exposure to acids. HgSe is a relatively stable compound which might mean that it is less toxic than elemental mercury or many organometallic mercury compounds. Selenium's ability to complex with mercury has been proposed as a reason for the lack of mercury toxicity in deep sea fish despite high mercury levels. [2]
Names | |
---|---|
IUPAC name
Mercury selenide
| |
Identifiers | |
3D model (
JSmol)
|
|
ECHA InfoCard | 100.039.903 |
EC Number |
|
PubChem
CID
|
|
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
HgSe | |
Molar mass | 279.55 g/mol |
Appearance | grey-black solid |
Odor | odorless |
Density | 8.266 g/cm3 |
Melting point | 1,000 °C; 1,830 °F; 1,270 K |
insoluble | |
Structure | |
sphalerite | |
Thermochemistry | |
Heat capacity (C)
|
178 J kg−1 K−1 |
Std enthalpy of
formation (ΔfH⦵298) |
247 kJ/mol |
Hazards | |
GHS labelling: | |
Danger | |
H300, H310, H330, H373, H410 | |
P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P302+P350, P304+P340, P310, P314, P320, P321, P322, P330, P361, P363, P391, P403+P233, P405, P501 | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Related compounds | |
Other
anions
|
Mercury oxide Mercury sulfide Mercury telluride |
Other
cations
|
Zinc selenide Cadmium selenide |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Mercury selenide (HgSe; sometimes mercury(II) selenide) is a chemical compound of mercury and selenium. It is a grey-black crystalline solid semi-metal with a sphalerite structure. The lattice constant is 0.608 nm.
HgSe occurs naturally as the mineral Tiemannite, and is a component of the "intimate mixture" of HgSe and Se known as HgSe2. [1]
Along with other II-VI compounds, colloidal nanocrystals of HgSe can be formed.
HgSe is non-toxic as long as it is not ingested due to its insolubility. Toxic hydrogen selenide fumes can be evolved on exposure to acids. HgSe is a relatively stable compound which might mean that it is less toxic than elemental mercury or many organometallic mercury compounds. Selenium's ability to complex with mercury has been proposed as a reason for the lack of mercury toxicity in deep sea fish despite high mercury levels. [2]